Dither signal remover for a dithered ring laser gyro

Details Dither signal remover for a dithered ring laser gyro Dither signal remover for a dithered ring laser gyro

1989-11-01

1991-09-17

Turner, Samuel

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964

Patent

active

050489631

ABSTRACT:
In a dithered ring laser gyro, a dither reference signal is provided to supply information representative of the dither angle or dither angular rate. This information is processed by a signal processor to generate a correction signal which is the sum of (i) a first function of the dither reference signal indicative of the dither angle multiplied by a first coefficient, and (ii) a second function of the dither reference signal indicative of the dither angular rate multiplied by a second coefficient. The aforementioned coefficient may be either selected or generated based on historical data derived from the dither reference signal and the usual sensor output signal. In turn, the correction signal is subtracted from the usual ring laser gyro output signal to provide a corrected sensor output signal.

REFERENCES:
patent: 4695160 (1987-09-01), Egli
patent: 4802766 (1989-02-01), Lundeen et al.

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